Steam-trap.



WILUAMS.l

j, ASTEAM TRAP. lAgPgrCATIUN man MAR. 21. 19m.

vPatented Mar, 21, 1916.

fluid contained therein.

. 35 The steam-trap illustrated embodies asuit- Yf"'ithe Vother yopenings-in theinain casing UNITED STATES iniframi oFFIoE."

ERNEST WILLIAMS, oFNnw Yomr, N. Y.

STEAM-'imm y 1,1v,o1o.} i,

' V Application filed March 21,

To all whom it may concern: Be it known-that I, ERNEST WILLIAMS, a citizen. of the United States, Land a resident of Bronx, ini the county of Bronx and State 5 of New York, have invented certain lnew and useful Improvements in Steam-Traps, of which the following is' a specification.

This invention relates to steam-traps, and the main object of the invention is to produce lo' a simple type of trap of thisgeneral. class, with few wearing parts, positive-mits action and having improved means for governing the operation of the controlling valve ofthe trap.. la This improved means or\controlling=tlie lo eration of the-trap comprises asits main e ement a chamber containing an expansi'ble Y lfluid, preferably a volatile liquid, and made substantially in bellows form to expand and contract lengthwise in accordance with the ex ansion orcontraction of the controlling Other features ofthe 'invention not here inbefore referred to will be hereinafter` described` and claimed and are -illustrated in the accompanying drawings, in whichyf-r Figure 1 is a substantially central, vertical Q section of a trap embodying my present in-` vention; Fig. 2 is a substantially central, nhorizontal half section of the same, and,

Fig; 3 is a detail ofa portion of the control-v ling valve and stem. Similar characters designate like parts in all the figures of the drawings.

able, main element or casing member, 2, substantially of usualconstruction, having two openings, one at the side and one at the bottom, for pipe connections, and a larger open- 40 ing at the top to receive a suitable cover,

such as 3. lThisl cover is usually of the saine` materiales the casing memberQ, that isof iron, and in the construction illustrated is threaded into a ring, such as fl, which-may 45 be of brass, securely fastened-in place inthe large upper opening of the main casing member 2. By means of this construction a non-corrosive and very tight joint is assured 5o between the cover 3 and the body of the casvmember 2 pipe connections are shown at .5 and 6, these being the .usual inlet and outlet pipn'es1epreferably screw-,threaded into the 'formed ini ."yThecontro oany type suitable for the purpose, but is [of bellows .folds and be capable of exp-an hei-2 the #aP-chamba v/ Specification of Lenersflia'tent. Patented Mar. 21, 1916'.

1am. 'serial mi. 326,200. formingwithsaid openings at the side and bottom-.of the chamber\thje` ports of the trap.

-The,` port i'may be` provided with a screen of suitable material and mesh, such as that shown atf?, to preventtlie passage lof .foreign partlcles of rust, dirt', etcff; The other port is' intended "to be giovinn edv` by a controlling valve .responsivego-changes in temperature of a sensitive .contro1lingmedim, 1 such as the aforesaidiexpansble Huid. VThe valvevoused mayy'be., ofy any, typefsuitable `for the purpose, butis herev illustrated asa sliding 'valve cooperating with a. suitable seat in the trap-chamber Preferablyithis' seat is r ovable part, the trap, the construction shown being 'one in" which the seat-is in\ abrass plug or nipplescrewf threaded intotheA openingat the bottom of the trap, `this )openingt being 4shown as of somewhat larger diameter at the point where. 75.

`the plug is Inserted 'in place Xthan lowei` `down where thepipe 6 :is screwed into the main member 2 bf the trap. This threaded brass plug is desigiiatedhere by 8 and'has y the double function of providing a seat for the valve and of also vl'orininga tight joint at the lower port `of the trap, there being a very` close contact between the screw-threads of the brass plug and those of the iron cas- Ing member 2 as will be understood.` 35 lling valve employed `may be preferablvof the typeillustrated. Its movements will be lderived from the hereinbefbre described controlling member embodying an expans'ible luidsensitive to lfchanges in temperature; zand the controlling me L ber'con- Ataining.; said sensitive fluid maybe `any suitable container movable in one direction with a substantially bellows-like ,action Here, the controlling member proper is illustratedas a sheet-metal chamber eorru# gated in such a'f manner as to formil a series f a lower headmn cross-pi"ece,f`1,3,jto which 'it' 195 is securely fastened. in slichta manner'as to lform a hernietlcally sealed-chamber, the up- 

